This will take place in German courts and from all what I known about the judicature here you cannot stretch a process endlessly if the judges don't allow it. Also this should a civil court (??) case, where usually the loosing side pays for the lawyers of the other side. (When you're right it is in general, from a financial point, always good to sue, because you only have to cover the court fees, about 150$ or nothing if you can prove that you have a low income.)